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main.go
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main.go
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package main
import (
"encoding/json"
"fmt"
"os"
"github.com/jedib0t/go-pretty/table"
"github.com/spf13/cobra"
"gopkg.in/yaml.v2"
"k8s.io/helm/pkg/helm"
helmenv "k8s.io/helm/pkg/helm/environment"
"k8s.io/helm/pkg/proto/hapi/release"
"k8s.io/helm/pkg/repo"
"k8s.io/helm/pkg/tlsutil"
)
const globalUsage = `
Check to see if there is an updated version available for installed charts.
`
var outputFormat string
var devel bool
var version = "canary"
var (
settings helmenv.EnvSettings
)
const (
statusOutdated = "OUTDATED"
statusUptodate = "UPTODATE"
)
type ChartVersionInfo struct {
ReleaseName string `json:"releaseName"`
ChartName string `json:"chartName"`
InstalledVersion string `json:"installedVersion"`
LatestVersion string `json:"latestVersion"`
Status string `json:"status"`
}
func main() {
cmd := &cobra.Command{
Use: "whatup [flags]",
Short: fmt.Sprintf("check if installed charts are out of date (helm-whatup %s)", version),
RunE: run,
}
cmd.Flags().StringVarP(&outputFormat, "output", "o", "table", "Output format, choose from plain, json, yaml, table")
cmd.Flags().BoolVarP(&devel, "devel", "d", false, "Whether to include pre-releases or not, defaults to false.")
if err := cmd.Execute(); err != nil {
os.Exit(1)
}
}
func run(cmd *cobra.Command, args []string) error {
client := newClient()
releases, err := fetchReleases(client)
if err != nil {
return err
}
repositories, err := fetchIndices(client)
if err != nil {
return err
}
if len(releases) == 0 {
if outputFormat == "plain" {
fmt.Println("No releases found. All up to date!")
}
return nil
}
if len(repositories) == 0 {
if outputFormat == "plain" {
fmt.Println("No repositories found. Did you run `helm repo update`?")
}
return nil
}
var result []ChartVersionInfo
for _, release := range releases {
for _, idx := range repositories {
if idx.Has(release.Chart.Metadata.Name, release.Chart.Metadata.Version) {
// fetch latest release
constraint := ""
// Include pre-releases
if devel {
constraint = ">= *-0"
}
chartVer, err := idx.Get(release.Chart.Metadata.Name, constraint)
if err != nil {
return err
}
versionStatus := ChartVersionInfo{
ReleaseName: release.Name,
ChartName: release.Chart.Metadata.Name,
InstalledVersion: release.Chart.Metadata.Version,
LatestVersion: chartVer.Version,
}
if versionStatus.InstalledVersion == versionStatus.LatestVersion {
versionStatus.Status = statusUptodate
} else {
versionStatus.Status = statusOutdated
}
result = append(result, versionStatus)
}
}
}
switch outputFormat {
case "table":
_table := table.NewWriter()
_table.SetOutputMirror(os.Stdout)
_table.AppendHeader(table.Row{"Release Name", "Installed version", "Available version"})
for _, versionInfo := range result {
if versionInfo.LatestVersion != versionInfo.InstalledVersion {
_table.AppendRow(table.Row{versionInfo.ReleaseName, versionInfo.InstalledVersion, versionInfo.LatestVersion})
}
}
// print Table
_table.Render()
case "plain":
for _, versionInfo := range result {
if versionInfo.LatestVersion != versionInfo.InstalledVersion {
fmt.Printf("There is an update available for release %s (%s)!\nInstalled version: %s\nAvailable version: %s\n", versionInfo.ReleaseName, versionInfo.ChartName, versionInfo.InstalledVersion, versionInfo.LatestVersion)
} else {
fmt.Printf("Release %s (%s) is up to date.\n", versionInfo.ReleaseName, versionInfo.LatestVersion)
}
}
fmt.Println("Done.")
case "json":
outputBytes, err := json.MarshalIndent(result, "", " ")
if err != nil {
return err
}
fmt.Println(string(outputBytes))
case "yml":
fallthrough
case "yaml":
outputBytes, err := yaml.Marshal(result)
if err != nil {
return err
}
fmt.Println(string(outputBytes))
default:
return fmt.Errorf("invalid formatter: %s", outputFormat)
}
return nil
}
func newClient() *helm.Client {
/// === Pre-Checks ===
if settings.TillerHost == "" {
if os.Getenv("TILLER_HOST") != "" {
settings.TillerHost = os.Getenv("TILLER_HOST")
} else if os.Getenv("HELM_HOST") != "" {
settings.TillerHost = os.Getenv("HELM_HOST")
}
if settings.TillerHost == "" {
fmt.Errorf("error: Tiller Host not set")
os.Exit(1)
}
}
if settings.TLSCaCertFile == helmenv.DefaultTLSCaCert || settings.TLSCaCertFile == "" {
settings.TLSCaCertFile = settings.Home.TLSCaCert()
} else {
settings.TLSCaCertFile = os.ExpandEnv(settings.TLSCaCertFile)
}
if settings.TLSCertFile == helmenv.DefaultTLSCert || settings.TLSCertFile == "" {
settings.TLSCertFile = settings.Home.TLSCert()
} else {
settings.TLSCertFile = os.ExpandEnv(settings.TLSCertFile)
}
if settings.TLSKeyFile == helmenv.DefaultTLSKeyFile || settings.TLSKeyFile == "" {
settings.TLSKeyFile = settings.Home.TLSKey()
} else {
settings.TLSKeyFile = os.ExpandEnv(settings.TLSKeyFile)
}
options := []helm.Option{ helm.Host(settings.TillerHost) }
// check if TLS is enabled
if settings.TLSEnable || settings.TLSVerify {
tlsopts := tlsutil.Options{
ServerName: settings.TillerHost,
CaCertFile: settings.TLSCaCertFile,
CertFile: settings.TLSCertFile,
KeyFile: settings.TLSKeyFile,
InsecureSkipVerify: !settings.TLSVerify,
}
tlscfg, err := tlsutil.ClientConfig(tlsopts)
if err != nil {
_, _ = fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
options = append(options, helm.WithTLS(tlscfg))
}
return helm.NewClient(options...)
}
func fetchReleases(client *helm.Client) ([]*release.Release, error) {
res, err := client.ListReleases()
if err != nil {
return nil, err
}
if res == nil {
return []*release.Release{}, nil
}
return res.Releases, nil
}
func fetchIndices(client *helm.Client) ([]*repo.IndexFile, error) {
indices := []*repo.IndexFile{}
rfp := os.Getenv("HELM_PATH_REPOSITORY_FILE")
repofile, err := repo.LoadRepositoriesFile(rfp)
if err != nil {
return nil, fmt.Errorf("could not load repositories file '%s': %s", rfp, err)
}
for _, repository := range repofile.Repositories {
idx, err := repo.LoadIndexFile(repository.Cache)
if err != nil {
return nil, fmt.Errorf("could not load index file '%s': %s", repository.Cache, err)
}
indices = append(indices, idx)
}
return indices, nil
}